Jordan Valve Mark 608 Series – Low-Pressure Gas/Tank Blanketing Regulator - Manual

3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
[email protected] • www.jordanvalve.com
I & M Mark 608 (1-1/2” - 2”)
Installation & Maintenance Instructions for
Mark 608 Gas Pressure Regulators
Warning: Jordan Valve Pressure Regulators must only be used, installed and repaired in accordance with these In-
stallation & Maintenance Instructions. Observe all applicable public and company codes and regulations. In the event
of leakage or other malfunction, call a qualified service person; continued operation may cause system failure or a
general hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized fluid. Before disassembling
a valve, be sure to release all spring tension.
Please read these instructions carefully!
Your Jordan Valve product will provide you with long,
trouble-free service if it is correctly installed and main-
tained. Spending a few minutes now reading these in-
structions can save hours of trouble and downtime later.
When making repairs, use only genuine Jordan Valve
parts, available for immediate shipment from the factory.
Ideal Installation
1. To protect the valve from grit, scale, thread chips
and other foreign matter, ALL pipelines and piping
components should be blown out and thoroughly
cleaned before the installation process begins.
2. Shutoff valves, pressure gauges and by-pass piping
should be installed as indicated in the Ideal Installa-
tion Schematic to provide easier adjustment, opera-
tion, and testing.
3. A line strainer should be installed on the inlet side
of the valve to protect it from grit, scale and other
foreign matter. A 0.033 perforated screen is usually
suitable for this purpose. Line strainers are avail-
able from Jordan Valve.
4. For best control, 3’ 0” straight sections of pipe
should be installed on either side of the valve.
5. In preparing threaded pipe connections, care
should be exercised to prevent pipe-sealing com-
pound from getting into pipelines. Pipe-sealing
compound should be used sparingly, leaving the
two end threads clean. Jordan uses, and recom-
mends, thread sealer Teflon ribbon.
6. The flow arrow on the valve body must be pointed
in the direction of flow. Ideally, the valve should be
installed in the highest horizontal line of piping to
provide drainage for inlet and outlet piping, to pre-
vent water hammer, and to obtain faster response.
7. If possible, install a relief valve downstream from
the valve. Set at 15 psi above the control point of
the valve.
8. In gas service, expand the outlet piping at least
one pipe size if the control pressure (downstream)
is 25% of the inlet pressure or less. A standard
tapered expander connected to the outlet of the
valve is recommended.
9. Where surges are severe, a piping accumulator is
recommended.
Control Line
A control line must be installed as follows:
1. Connect one end of a ¾” pipe to the fitting under
the diaphragm.
2. Connect the other end to an appropriate fitting on
the tank.
3. DO NOT locate the control line tap in any location
where turbulence or abnormal velocities may occur.
4. The control line should be sloped away from the
valve.
5. Install a pressure gauge to measure pressure in the
tank itself, not in the outlet piping or the control line
to aid in setting the valve.
Main Line
1. Shut off Valve
2. Jordan Regulator
3. Strainer and Drain Valve
4. Pressure Gauge
5. Relief Valve
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